The ability to select manually which profiles has to be online would make interface much more complex and thus the price would be higher. We can offer a low level solution:
1) Add boolean profile field via [admin panel -> builders -> profile fields] to profile edit page for admin and give that field a name IsAutoonlineAllowed
2) Edit the file modules/aqb/autoonline/classes/AqbAutoonlineModule.php, replace two ocurences of the liine
$where = 'WHERE (`Couple` OR `Couple`>`Profiles`.`ID`) see more AND `Status` = "Active" AND ';
with the line
$where = 'WHERE (`Couple` OR `Couple`>`Profiles`.`ID`) AND `Status` = "Active" AND `IsAutoonlineAllowed` = 1 AND ';

After that you can manually edit the profiles and there on profile edit page check/uncheck the field IsAutoonlineAllowed and only those profiles will be used by autoonline module which have that field checked.