Can you enable only select callers to come through while using Do Not Disturb

Yes

Settings > Do Not Disturb > Allow Calls From

Choices:

Everyone

No One

Favorites

Select Favorites but you need first to populate your Favorites with Contacts: from the Dock select Phone/Call > Favorites > "+" sign to add Contacts.

Hope this helps.

Just from Favorites.

Tap Settings>Do not disturb>Allow calls from....

Regards

Calls yes. Texts, no.

All text messages will be silenced when DND is active.