Check if this tool is available on your plan. You can find all the information about Bitrix24 plans on the pricing page
An administrator can set the menu view to everyone in the company.
First of all, you need to configure the main menu and add any custom items you need.
Read more in the article Add items to the main menu
Then you need to click Configure menu > Set my menu for everyone.
Specify users your menu will be set for and click Save.
Users can configure their menus the way they need, but the menu set by an administrator will be considered as the default menu. If a user clicks Configure menu > Reset menu, the menu will be reset to the default view.