How to restrict an admin to access certain areas of Admin Dashboard without plugin

[DarKMaSk]

• Title for your fault: Want to make a custom role to restrict an admin to access certain area
• Fault Description: I am unable to create a Custom Role with which I can restrict an admin to access certain areas in Admin Dashboard of WordPress.
• What have you done to try to fix the issue: I am not a coder but I do edit some code by Google-ing. I tried to make a MU-PLUGIN which remained unsuccessful. I tried to add functions in the site theme's functions.php file but could not make it work as per my desire.
• What I want to do: I am building a hotel website with wordpress. Now, I have to give my client the admin access to manage the booking only. All menus / options on the left side panel will be inaccessible and hidden except the booking option. I prefer using a method which will not be destroyed / changed with the update of the theme. I have attached a screenshot with multicoloured markings and their explanations for better understanding. So far, I have successfully hide the rest of the menu / links / options on the left panel using some code in functions.php file of the theme I used but have failed to hide the red-marked area. Can you guys help me? Please guide me.

Reference image:

 

[as7amahamed]

Better go with good theme which has front-end panel only. EX - Traveler Theme.

Or

Go with admin access plugin ( WP Ruby ).

 

[xeric]

Simplest solution that I know of: https://wordpress.org/plugins/controlled-admin-access/

Since it's open source freeware, you don't even need to pay for the functionality.

Why do you want to do it without a plugin?

 

[DarKMaSk]

@aslam_1 and @xeric Friends, actually this thread had a long conversation with @frizzel which extended to 3 (three) pages where he guided me step by step and helped me by making a 'mu-plugin' to create a clean custom user dashboard and advised me to do the restriction part with a plugin 'Admin Menu Editor Pro' which I downloaded from here and it did the job. But unfortunately, that whole conversation is gone. How? I don't know. But there were some more codes which I didn't copied on good faith that those are here and I will be able to copy them when I will work on that part and that is my big loss. All of that is gone now. But, you know, mishap happens and this was my fault that I didn't copied all of them at the first place, though I copied the most important one, the 'mu-plugin'. Anyway, the problem has been solved. So, no need to spend your precious time on giving solutions for this one anymore.

Simplest solution that I know of: https://wordpress.org/plugins/controlled-admin-access/

Since it's open source freeware, you don't even need to pay for the functionality.

Why do you want to do it without a plugin?

Thanks for the info. I will surely give it a try.

 

[ckeeper]

Since you have resolved your problem I will add this link for future use if anyone needs it again.
https://njengah.com/remove-wordpress-admin-menu-items/

 

[DarKMaSk]

Why do you want to do it without a plugin?

Friend, I am not very fond of plugins. More plugins mean more problems, you know why. I install only those plugins which are essential for the functionality. And in my site, there were already 17 plugins installed all of which are essential. That's why I didn't want to install anymore plugin. But as I am not very good at coding, I had to use that 'Admin Menu Editor Pro' plugin for imposing the restriction. Moreover I needed a clean customized dashboard with customized header and footer for the user / client. To solve that purpose @frizzel made a 'mu-plugin' and I copied it. But along the process, what he did, he taught me what is what in the code and that tutorial I am missing most because I did not copied them. Anyway, accident is accident and we have to live with the consequences.

 

[frizzel]

But unfortunately, that whole conversation is gone.

No, it's not, it's only in a different thread: https://babia.to/threads/i-want-to-restrict-access-of-an-user-ref-pic-given.42319/

 

[DarKMaSk]

O MY GOD!!! I LOVE YOU MY FRIEND !!! I thought it is gone forever!!! Oh! How can I thank you friend? As there is no 'Add Friend' option here, I am using 'Follow' option to add you as my friend. Thank you soooo much!