I have found in Moodle help that default course blocks can be defined via config.php using this line:
$CFG->defaultblocks_override = 'block_name:another_block_name';
Semicolon means blocks to the left will be on the left side and vice versa. So far, so good. But how on earth can I force a block, for all new courses, to be in the specific Essential Theme region: top or header position, for example.
Help urgently needed! Thank you!