QoS for MS Teams

[RickJS]

Greetings,

We are looking to make configuration changes to improve users' experience with MS Teams.  At the switch level, there are QoS settings that need to be entered:

qos udp-port ipv4 range 50000 50019 dscp ef     (Telephony)

qos tcp-port ipv4 range 50000 50019 dscp ef       (Telephony)

qos udp-port ipv4 range 50020 50039 dscp af41 (Multimedia Conferencing)

qos tcp-port ipv4 range 50020 50039 dscp af41  (Multimedia Conferencing)

qos udp-port ipv4 range 50040 50059 dscp af21 (Low-Latency Data)

qos tcp-port ipv4 range 50040 50059 dscp af21  (Low-Latency Data)

The question I have is whether or not these settings need to be applied ONLY to the switch acting as our gateway (it's tied to our firewall), or if I need to apply the settings to all the swtiches (all ProCurve) that users are tied to in our network?  The config changes are easy enough to apply but I am hoping someone can tell me if I need to apply to one or all of our devices.  Cheers!