How much power output on CHARM DO 24V?

Hello, 

I would like to use the DO from a 24V Charm card to control a low wattage 24 solenoid valve and  24V relay.

1. Is this good control engineering practice to use 1 DCS DO to control two power conscumption devices in field?

2. What is the power output for a 24V Charm card?

Thank you very much