VERIFIED SOLUTION i
Products affected: MapInfo Pro™, MapInfo Professional®, MapBasic®
At present, you can not lock the position of the frames and object in a Layout Designer Window using a MapBasic® command.
This particular functionality has been raised as a product enhancement under the internal reference of MIPRO-93739.
UPDATE - As of August 2019 this item is still being listed as a future product enhancement.
UPDATED: August 29, 2019