Hi Marko,
Sorry for the delay.
We have analyzed your query. In Gantt currently there is no support for excel type filter and filter based on your requirement. But we have already logged a feature report for achieving complex filtering. You can track the status of these feature from below feedback link.
As we have already lined up with some major features, we could not start this feature immediately. We will implement this support and include in any our upcoming releases.
Please cast your vote to make it count. We will prioritize the features for every release based on demands
Regards,
Karthikeyan Raja