# How to select a specific Coordinator to join out of Two running at same time?

**URL:** <https://forums.digi.com/t/how-to-select-a-specific-coordinator-to-join-out-of-two-running-at-same-time/20321>\
**Category:** XBee - 802.15.4\
**Tags:** joining, xbee3, zigbee\
**Created:** [March 6, 2019, 11:30am UTC](https://forums.digi.com/t/how-to-select-a-specific-coordinator-to-join-out-of-two-running-at-same-time/20321 "2019-03-06T11:30:13Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![tanayrastogi](https://avatars.discourse-cdn.com/v4/letter/t/da6949/32.png) [@tanayrastogi](https://forums.digi.com/u/tanayrastogi)\
**Post date:** [March 6, 2019, 11:30am UTC](https://forums.digi.com/t/how-to-select-a-specific-coordinator-to-join-out-of-two-running-at-same-time/20321/1 "2019-03-06T11:30:13Z")

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I am new to Zigbee and Xbee, so maybe this is a stupid question to ask. But I am missing the conceptual parts.

I am currently running XBee3 Mesh kit with two devices set as Coordinators.  
I am setting the ID parameter as “0” so that they select randomly a PAN ID for themselves.

Now I have a router device, that will join to the coordinator.

How can I select which PAN ID the router should join?

I thought of doing the Network Discovery for the router, but then soon realized that it works only if you are on a network and then it lists all the devices in the network.