The invitation form for the OAS Visitor Program is available at this link.
The form is structured as follows:
Confirmation email: this is used to ensure that we can keep in touch with you.
Information about the host: Please insert the name and surname of the contact person at INAF-OAS.
Information about the visitor: Please insert the name and surname of the proposed visitor, their email, their home institution, their nationality, and possibly a link to their home page and CV.
Information about the visit: Please insert the anticipated starting and finishing dates of the visit, a paragraph in justification of the visit, a description of the additional value that the visit will bring to the astronomy community at OAS, an estimate of the requested financial support with an indication of what the costs will cover, and any potential further note or request.