Skilled Administrative Support for Ms Office, Powerpoint & Document Management

I am looking for reliable freelancers for occasional fixed-price tasks in PowerPoint, MS Office, document checks and simple business support.

Typical tasks include:
-Creating or improving PowerPoint presentations
-Formatting slides in a clean business style
-Checking documents for formal issues, layout, consistency and formatting
-Anonymising documents or concepts
-Creating simple reports
-Requesting or following up on invoices/documents

I only work with fixed prices agreed in advance, not hourly billing.
Please include in your application:
1. Your experience with PowerPoint, Excel, Word and MS Office
2. Portfolio or anonymised PowerPoint examples, if available (to see the style)
3. Your typical fixed price for:
- PowerPoint: 3 slides
- PowerPoint: 10 slides
- PowerPoint: 20 slides
- Document formal check/layout check (10 pages, 20 pages, 50 pages)
- Requesting/following up on invoices or documents
4. Your availability and typical response time (also during weekends)
5. Your language skills, especially English

I am looking for freelancers who work accurately, reliably and confidentially. Regular follow-up tasks are possible if the collaboration works well.