(1) A creditors' assembly shall be convened if requested by
1. the insolvency administrator;
2. the creditors' committee;
3. at least five creditors with a right to separate satisfaction or non-lower-ranking insolvency creditors whose rights to separate satisfaction and claims together are assessed by the insolvency court to represent one fifth of the sum resulting from the value of all rights to separate satisfaction and of the claims of all non-lower-ranking insolvency creditors;
4. one or more creditors with a right to separate satisfaction or non-lower-ranking insolvency creditors whose rights to separate satisfaction and claims together are assessed by the insolvency court to represent two fifths of the sum mentioned at no. 3.