You can use one line to share cable and sat using two individual diplexers or a multi switch and one individual diplexer per line.
For a mutli switch with built in diplexer(the port is usually labled uhf/vhf or cable/ant)take the cable input from the pole and connect it to this port.Use a single diplexer at other end of line and connect port labled in/out and connect it to line.Then take two jumpers and connect port labled sat to reciever and port labled uhf/vhf or cable/ant and connect to modem,cable box...etc.
If no multi switch with built in diplexer,take cable input and connect to a diplexer at port labled as mentioned above.Take sat signal from dish or multi switch and connect to port lanled sat.Connect in/out port to line.On other end of line,use another diplexer and connect line to in/out.take two jumpers and connect to cable and sat equip as mentioned previously.
This is not compatible with all systems.It def works with standard Dtv round dish(101 sat).To the best of my knowledge,there are no diplexers compatible with a Swm system.