Using a phone plugged into Ooma Telo at the same time as phones using a Linx that is connected to the same Telo

I have an Ooma Telo and an Ooma Linx. When a call comes in to our house, I can answer using a phone connected to the Linx or the phone that is plugged into the back of the Telo. But if another person wants to join the call on another extension phone connected to the Linx, it will only work if the call was first answered on another Linx connected phone. If I pick up the phone that’s plugged into the Telo, I hear a dial tone on the Telo powered phone. If I answer a call on the phone that’s plugged into the Telo, I cannot then use a phone that’s connected via the Linx. Also, if I call out on a Linx connected phone, I cannot use the phone that is plugged into the Telo until I end the Linx connected call. Is there a settings utility or function I can access to correct this?