Need to change session time out in platform

“Session time out for the yellow platform user is 30 mins. If the dashboard user is inactive for 30 mins, they will be prompted to log in again in order to access the dashboard”
One of the customer need this time to 15 mins instead of 30 mins.Because they are suspecting that A longer session timeout increases the window of opportunity for an attacker to gain un authorized access to a user’s session.
Is it possible to change the timing for this?