add multiple recipients to bcc from contacts by clicking on the contacts like other mail clients

I am trying to add multiple recipients in the bcc portion of the email by going to contacts and selecting certain persons by clicking on their names

Hi Lorin,
I think the best way to choose more contacts for Bcc field would be clicking the ‘To:’ label and opening the Select contact window.
Here you can filter your contacts or open specific folder and then just click the contact and choose in which section of recipients you want to add it.

Regards,
Olivia