CQG data feed does not support continuous contracts.
However, you can create a Custom Futures contract in your QuoteManager, which means you locally merge individual contracts according to your rules.
1. Add individual futures contracts by going to QuoteManager > Instrument > Add Symbol > From Data Source > CQG.
2. After all needed symbols are added to QuoteManager, go to Instrument > Add Custom Futures.
3. Select CQG as the Data Feed and the symbol you want to merge. Tick the months you want, and set all other settings. Click OK.
4. The continuous symbol is now available for charting in MultiCharts.