Hello,
I´d like to help you redisign your diagrams using DIA, MS-Visio or similar programs.
My background:
I´m an industrial engineer doing all the things around processes, optimization, process-planning and process design.
I used to describe processes in BMPN & BPMN 2.0, because this is one standard in automotive industries. (Also I can use IDEF/SADT if necessary).
For this task, I highly recommend using MS Visio, because of its easy-to-handle, easily connectable and very useful shapes. I do already have a preformed shape-set, using BPMN (& 2.0). Once finished, you can easily redefine your shapes, process-data, tasks etc., you can make your standardized shapes, you can also print as pdf, AutoCad, JPG, PNG. Only requirement: need a licence on MS Visio (sth. around 150 €... 200 €).
I can help you, I can do that for you, I do have a licence.
If you need to professional redesign your shapes, it would be nice if you´d contact me in this case.
If you got some questions, feel free to contact me for that.
And please let me know, how to connect to your PC in Spain (VPN, TeamSpeak, etc.), if we do this project together.
Thank you & Best Regards
André Hu