Glad I could help (I am standing on the shoulders of giants, read up in this thread).
The first question is probably easy - you probably have the mic still configured as the first hardware input (leftmost, full-height strip). Then you probably have it virtually connected to the output device A1. If so, the A1 button to the right of its fader slider is probably enabled (light green). Click that to disconnect it. Post a screenshot of VM(B) if not sure and I'll be able to see how it's configured.
The second question I'm not so sure about as I haven't set it up yet myself, but in theory there are two ways you can do it:
1) Disconnect your mic from VM(B) and configure VA/Teamspeak to access it directly as before. To do this, click the mic device name below Hardware Input 1 (top left of VM(B) window) and choose 'Remove device selection'. Then set up VA/Teamspeak.
2) Continue to pipe your mic through VM(B) using its second audio bus, and configure VA/Teamspeak to take audio from VM(B)'s virtual output device. To do this, connect the mic (on Hardware Input 1, as before) only to output B1 using the buttons to the right of HW 1's slider. Then configure VA/Teamspeak to take audio from VB-Audio Voicemeeter VAIO. Not VB-Audio Voicemeeter AUX VAIO, that would be output B2. There seem to be a lot of Youtube videos about this configuration, so if I have got something wrong and you find the answer there, please let me know.
The first question is probably easy - you probably have the mic still configured as the first hardware input (leftmost, full-height strip). Then you probably have it virtually connected to the output device A1. If so, the A1 button to the right of its fader slider is probably enabled (light green). Click that to disconnect it. Post a screenshot of VM(B) if not sure and I'll be able to see how it's configured.
The second question I'm not so sure about as I haven't set it up yet myself, but in theory there are two ways you can do it:
1) Disconnect your mic from VM(B) and configure VA/Teamspeak to access it directly as before. To do this, click the mic device name below Hardware Input 1 (top left of VM(B) window) and choose 'Remove device selection'. Then set up VA/Teamspeak.
2) Continue to pipe your mic through VM(B) using its second audio bus, and configure VA/Teamspeak to take audio from VM(B)'s virtual output device. To do this, connect the mic (on Hardware Input 1, as before) only to output B1 using the buttons to the right of HW 1's slider. Then configure VA/Teamspeak to take audio from VB-Audio Voicemeeter VAIO. Not VB-Audio Voicemeeter AUX VAIO, that would be output B2. There seem to be a lot of Youtube videos about this configuration, so if I have got something wrong and you find the answer there, please let me know.
Couldn't have done it without your advice my friend !