Single PC5548 uplink to PC5524 stacked using sfp+ cables

Hello,

I uplink one single PC5548 Dell switch to a two-stacked PC 5524 switches, I did not do any special configuration on the switches. i suppose that the single PC5548 switch should be part of the network that any computer plugs into any port on this switch should work, but it isn't and could not ping any ip address on the network.

what should I do further to make this switch join to the rest of the network/switches.