Administrator's option for Hiding Cascade sort Button on Gantt Chart

Although some parties may be using Cascade sort at Gantt Chart, we are not using it.

And we get the serious problem if some user click Cascade sort button.

1) We can't return to the previous sort order that the project manager changed by manual.

2) The new sort order affecte to all other related users.

I would like to request that the production team adds the feature that can hide Cascade Button 

from screen as the option for administrators.

Akira Gerente de TI