BaoFeng's initial dive into the market of DMR was only Tier-1 which is great as only another BaoFeng DMR radio would be able to decode the encryption. This is a true benefit for the enemy not to listen in on your comms. With the addition of Tier-2 offering, I wonder if you can still use the specific encryption while in Tier-1 mode.
Now on another note: The use of comms among a 3-6 man FT (Fire Team) is STRONGLY discouraged for several reasons.
1) The enemy RDFing you.
2) You may not know that one or more of your team's comms failed to function till it is to late, and
3) The noise factor* of talking and receiving especially if your are using a 'Dogbone' or standard mic affixed to your
shoulder strap.
ONE (1) person only, probably a dedicated radio guy/gal (RTO - Radio Telephone Operator,) should have comms to be used by the TL (Team Leader) to communicate back to the TOC (Tactical Operations Center). The RTO should always be connected to the TL like they are newlyweds.
Bottom-line, there is NO replacement for hand signals when out in the field with your FT.
* I learned this the hard way. We always use HT's (Handie Talkies) when hunting deer. We have a standard mic/click protocol to communicate - Never voice unless calling for help. One click means, on stand/yes. Two clicks mean no/negative. Three clicks be attentive/movement going towards you, etc.
Well two years ago, we loaned a radio to a guest up to the cabin for deer season. He got bored so he decided to not follow protocol and started to talk just as a nice 8-point buck was coming into range of my stand. Needless to say, the buck got nervous and split.