Access control models help the organizations in restricting access to Information Systems in order to minimize internal and external threats. When organizations are required to form cross functional teams and allow them to access the sensitive information, the traditional access control model like Role Based Access Control (RBAC) are inadequate to mitigate internal threats. In this paper, a unique access control approach called Intent Based Access Control (IBAC) is introduced to secure data sharing with cross functional teams. In IBAC, a group of interdisciplinary individuals is formed to achieve the organization's intent. It uses the Weighted Sum Model (WSM) which is one of the Multi Criterion Decision Making (MCDM) approach to choose the best individuals for the Intent Group based on their capabilities, finds their priority level using Bayesian inference model, and it also evaluates their work deviation score using N-Median Outlier Detection (NMOD) method for selecting them to the Intent Group. An employee whose capability score is sufficient as per the intent requirement, the deviation score is less than the role threshold value, priority level is High or Medium, and does not belong to active intents are selected for the Intent Group. The access permissions are assigned to the Intent Group to access the required resources instead of assigning them to the individual user as in RBAC.