Passwords can be set with a microflow. You can copy the method from the microflows already in your app in the administration module.
Regards,
Ronald
Got it working now, Using New button as a microflow, i first created an object, selected the entity that i want to store the password, I retrieved a list of userRoles from system, wrote the xpath [Name = 'name of the role to hold the password'], Change role that is from the list you fetched, then Show page (NewEdit page) the one that will store password
Regards
Joseph