The installation is described on the product page. After the addon is installed correctly and the Instant Meshes Application is referenced, the remeshing process is controlled via the JRemesh panel in the sidebar (N key to toggle).

Usage

This is how JRemesh panel with the settings that can be used for remeshing objects in the Blender scene.

After the installation process, the Panel JRemesh is available in the Blender sidebar (Press N key to toggle it). Now you have the option to use different remeshers:

Instant Meshes

To remesh an object just select it and press the Remesh button after setting the desired settings (here are the descriptions from the Instant Meshes Application):

• Deterministic: Prefer (slower) deterministic algorithms
• Dominant: Generate a tri/quad dominant mesh instead of a pure tri/quad mesh
• Instrinsic: Intrinsic mode (extrinsic is the default)
• Boundaries: Align to boundaries (only applies when the mesh is not closed)
• Smooth iterations: Number of smoothing & ray tracing reprojection steps (default: 2)
• Crease Degree: Dihedral angle threshold for creases
• Vertex Count: Desired vertex count of the output mesh

Quadriflow

This remeshers is a Blender operator that is using an implementation of Quadriflow:

No matter which remesher you use, after remeshing a new remeshed object is created, the original object is still available but hidden in the scene, so that the process is non-destructive. The mesh is quad-based now, so you can add a Multiresoultion Modifier it to e.g. for hardsurface sculpting.

Remeshing NGons can lead to problems that can be solved when adding a triangulate modifier to the original object (option Triangulate). Sometimes remeshing is producing holes so the option Fill holes is available.