10.16. Points2One
This plugin connects points in a layer to form lines and polygons, grouping them by source layer attributes.
After installation the plugin will appear in the Vector toolbar:  .
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In the plugin dialog configure the parameters:
- Input layer - layer of points to be used as vertices; 
- Create polygons / Create lines - select the type of features you want to create; 
- Closed - select to have the line end in the point where it begins; 
- Group features by - select the field to be used for grouping; 
- Sort vertices by - select a field to be used to sort the vertices of the lines or polygons; 
- Then by - additional field to sort by after the initial one; 
- Output shapefile - select folder where the out ESRI Shapefile will be created; 
- Encoding - select from a list; 
- Add result to canvas. 
If the points are not grouped, the vertices are sorted by the point ID.
See the plugin at work in our video:
Watch on youtube.