Grant select on schema

Me as a User can i execute the following statements via sql editor?

Grant select on schema system to _sys_repo with grant option;

Grant select on schema _sys_bic to _sys_repo with grant option;

Grant select on schema Schema_orders to _sys_repo with Grant Option;

Is there a grant Insert or grant update or grant delete's? since i always see select, i thought select statements.

Thanksa  lot for the helpful info.