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You have 2 sends in that screen shot. the second one is unassigned to a bus. The upper arrow points to send #1 level, the lower arrow points to send #2 level. You can have multiple sends on a track.
DP 11.31 PT 2024.3 VEP 7.x with various VIs
NI Komplete Audio 6 on HP Envy 8G i7 Quad Laptop Win11
MOTU 828es ADA8200 MTP-AV on HP Z2 G4 Xeon Workstation Win11
MOTU M4 on MacBook Air M2 2023 Sonoma.4.1
In your picture, the knob for send 1 is above the Bus 1 assignment box.
The 2nd knob is for a second send which you assign in that box just below that 2nd knob.
Also, the M stand for mute, so you can mute the send temporarily. The P stand for Pre-Fader (I think), which means that the knob will send amount of signal that is shown on the knob regardless of the fader position (even if the fader is all the way down). If the P is off, the send will be Post-Fader (which ironically, also starts with P) -- meaning that the amount being sent is "scaled" by the fader. If you pull the fader down, less signal will go to the send. If you pull the fader all the way down, nothing goes to the send.
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